mirror of
https://github.com/RGBCube/serenity
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d061da4cf5
I just copy-pasted microseconds_since_boot and set_interrupt_interval_usec from aarch64. However, on RISC-V, they are not in microseconds. The TimerRegisters struct is also unused. current_time and set_compare can also be private and static.
53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
/*
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* Copyright (c) 2023, Sönke Holz <sholz8530@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Types.h>
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#include <Kernel/Interrupts/GenericInterruptHandler.h>
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#include <Kernel/Library/NonnullLockRefPtr.h>
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#include <Kernel/Time/HardwareTimer.h>
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namespace Kernel::RISCV64 {
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class Timer final : public HardwareTimer<GenericInterruptHandler> {
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public:
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static NonnullLockRefPtr<Timer> initialize();
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virtual HardwareTimerType timer_type() const override { return HardwareTimerType::RISCVTimer; }
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virtual StringView model() const override { return "RISC-V Timer"sv; }
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virtual size_t ticks_per_second() const override { return m_frequency; }
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virtual bool is_periodic() const override { TODO_RISCV64(); }
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virtual bool is_periodic_capable() const override { TODO_RISCV64(); }
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virtual void set_periodic() override { TODO_RISCV64(); }
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virtual void set_non_periodic() override { TODO_RISCV64(); }
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virtual void disable() override { TODO_RISCV64(); }
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virtual void reset_to_default_ticks_per_second() override { TODO_RISCV64(); }
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virtual bool try_to_set_frequency(size_t) override { TODO_RISCV64(); }
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virtual bool is_capable_of_frequency(size_t) const override { TODO_RISCV64(); }
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virtual size_t calculate_nearest_possible_frequency(size_t) const override { TODO_RISCV64(); }
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// FIXME: Share code with HPET::update_time
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u64 update_time(u64& seconds_since_boot, u32& ticks_this_second, bool query_only);
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private:
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Timer();
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static u64 current_ticks();
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static void set_compare(u64 compare);
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//^ GenericInterruptHandler
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virtual bool handle_interrupt(RegisterState const&) override;
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u32 m_interrupt_interval { 0 };
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u64 m_main_counter_last_read { 0 };
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u64 m_main_counter_drift { 0 };
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};
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}
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